System and method for performing virtual device I/O operations

Details System and method for performing virtual device I/O operations System and method for performing virtual device I/O operations

2005-01-04

2005-01-04

Nguyen, Hiep T. (Department: 2187)

Electrical computers and digital processing systems: multicomput

Multicomputer data transferring via shared memory

Plural shared memories

C711S148000

Reexamination Certificate

active

06839740

ABSTRACT:
Systems, methods, apparatus and software can make use separated I/O processors and strategy processors in performing virtual device I/O operations. I/O processors operating on cluster nodes, storage appliance ports, or other devices can receive I/O operation requests directed to virtual devices, e.g., volumes or virtual logical units. Information about the request is forwarded to a strategy processor, operating independently or as part of larger volume management software where corresponding physical device I/O operations are determined. The physical device I/O operations are sent back to the I/O processor which executes the operations and/or passes the operation on to the appropriate storage device.

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